{"id":2064401,"date":"2026-06-25T11:00:47","date_gmt":"2026-06-25T09:00:47","guid":{"rendered":"https:\/\/www.luxsure.fr\/2026\/06\/25\/infertility-is-no-longer-inevitable-it-is-a-genetic-prognosis\/"},"modified":"2026-06-25T11:04:01","modified_gmt":"2026-06-25T09:04:01","slug":"infertility-is-no-longer-inevitable-it-is-a-genetic-prognosis","status":"publish","type":"post","link":"https:\/\/www.luxsure.fr\/en\/2026\/06\/25\/infertility-is-no-longer-inevitable-it-is-a-genetic-prognosis\/","title":{"rendered":"Infertility is no longer inevitable; it is a genetic prognosis"},"content":{"rendered":"\n

Twenty years after the first human genome project, sequencing a patient\u2019s DNA no longer costs three billion dollars or takes ten years of work, but rather less than a thousand euros, in just one week. This technological shift is moving fertility medicine from late diagnosis to data-driven prediction. <\/p>\n\n

One Hundred Genes, Three Families<\/h2>\n\n

Primary ovarian insufficiency and diminished ovarian reserve affect 4% of women under the age of forty and account for a significant proportion of patients undergoing in vitro fertilization. For decades, their causes remained largely unknown. Next-generation sequencing has changed the equation: in the space of about a decade, it has enabled the identification of approximately 100 genes involved in these conditions. An international cohort\u2014the largest ever assembled on this topic\u2014has shown that the causes remain unexplained in 70% of cases, but that genetics now makes it possible to identify 30% of them\u2014a proportion that would have seemed out of reach fifteen years ago. <\/p>\n\n

Even more significant than the number is the architecture. The identified genes fall into three distinct biological pathways, each with radically different prognoses. The first governs follicular growth. The second governs metabolism and mitochondrial function in the ovary. The third, and most numerous, group comprises DNA repair genes\u2014a family that, prior to this research, no one had linked so clearly to infertility, even though its role in meiosis might have suggested such a connection. <\/p>\n\n

The Gene That Links the Ovary to Cancer<\/h2>\n\n

This third pathway led to the most unexpected discovery of the past year: genes belonging to the Fanconi anemia pathway\u2014including BRCA1, BRCA2, and FANCM, already known to predispose to cancer\u2014cause primary ovarian insufficiency when present alone. The established link is no longer merely statistical: it is mechanistic, and it changes the scope of the diagnosis. Identifying a mutation in these genes in an infertile patient also opens up the possibility of cancer prevention. <\/p>\n\n

\u201cWe\u2019re moving toward predictive medicine,\u201d summarizes geneticist Micheline Misrahi-Abadou, a professor of biochemistry and molecular biology at Paris-Saclay University, who led the study of this cohort. According to her, understanding the biological pathway involved makes it possible to anticipate the progression toward loss of ovarian reserve, predict the onset of comorbidities, and, if necessary, offer fertility preservation before it becomes an urgent necessity. <\/p>\n\n

A Hundred Causes, One Treatment<\/h2>\n\n

There remains a gap that genetics alone cannot bridge: for every hundred or so identified causes, there is currently a single treatment\u2014hormone stimulation followed by in vitro fertilization\u2014regardless of the molecular origin of the disorder. Predictive medicine now seeks to bridge this gap, following the model of what oncology has achieved with targeted therapies: characterizing a patient\u2019s molecular alteration before selecting a treatment, rather than administering the same protocol to everyone. <\/p>\n\n

Initial results are in. A team tested a series of drugs\u2014already approved for other indications\u2014on patients with impaired follicular growth. All fourteen patients responded with a resumption of follicular growth. For impairments in DNA repair, resveratrol, an antioxidant, has demonstrated its ability to stimulate this repair in the ovaries. Neither of these two findings constitutes an approved treatment\u2014but both point in the same direction: toward a pharmacological approach to infertility organized by molecular target, rather than by symptom. <\/p>\n\n

Details.<\/strong> The project to sequence the first human genome took about ten years and cost three billion dollars. Today, next-generation sequencing can accomplish the same task in a week, for less than a thousand euros. <\/p>\n\n

What genetics reveals, it does not provide a way to treat: a hundred identified genes represent a hundred potential targets, not a hundred drugs. The gap between our ability to predict and our ability to treat remains the true measure of how far we\u2019ve come\u2014and how far we still have to go. As long as funding for women\u2019s reproductive health remains\u2014by the very admission of the researchers working in this field\u2014disproportionate to the scale of the problem they are documenting, how many of these targets will remain mere diagnoses, never becoming treatments? <\/p>\n\n

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